How do you cleanse your spirit from past experiences that left you hurt?

What I would really recommend is to engage in spiritual activity. We would say Krishna conscious activity, God conscious activity that connects you with God. That will burn up all your karma and lift you to a level where there is no more karma and where you will be very happy spiritually even if here is some chaos around you and things are not good in your environment, but you will be above it. You will get over the past experiences, the scars, the internal scars, bad experiences and you will be able to rise above what’s going on currently.